Advanced formulation protects wood from the inside out to guard against moisture and sun damage while adding a slight hint of color. Fortified with Penetrol for excellent penetration. Recommended for use on any properly prepared exterior wood, including decks, fences, siding, railings, outdoor furniture and other wood surfaces. Apply to new, dry, pressure-treated wood, uncoated new or weathered wood or wood previously stained or painted. Apply directly to weathered wood previously finished with Flood CWF-UV5 other previous coatings must be completely removed.